A number of Sony DSC-QX30 reviewers who bought it agreed that it had a good lens. Ephotozine.com mentioned on expert review site Ephotozine “The Sony Cyber-shot QX30 is one of Sony's "Smart Lens" cameras, designed to be used with a smartphone” in their review of this digital camera. Ephotozine.com also wrote “It gives you an impressive 30x optical zoom lens, vastly improving the reach of your camera”. Expert review site Techradar.com mentioned “It looks like a giant add-on lens for your smartphone.” in their review of this digital camera.
Two people wrote in their reviews that it had a good zoom. One Sony DSC-QX30 owner concluded that the product had a good autofocus. Katia mentioned on Amazon two years ago “The focus is fast” in her review of this digital camera.